Countersunk Bolts

Countersunk bolts are used when a smooth surface is required. Common applications include: bridge decking, walkways, and railing.

Manufacturing

Portland Bolt manufactures countersunk bolts from 1/2″ diameter through 1-1/2″ diameter in most ASTM, AASHTO, and SAE specifications including, A307 Grade A, A449, and Grade 8. Countersunk bolts have a head angle of approximately 80 degrees. Bolts are available with and without a slot in the head. Special tooling can be created to produce nonstandard head dimensions or bolt heads with your company’s name and/or logo.